CN103842133A

CN103842133A - Pliers

Info

Publication number: CN103842133A
Application number: CN201180073955.4A
Authority: CN
Inventors: A.海因索恩; B.里普
Original assignee: Knipex Werk C Gustav Putsch KG
Current assignee: Knipex Werk C Gustav Putsch KG
Priority date: 2011-08-04
Filing date: 2011-08-04
Publication date: 2014-06-04
Anticipated expiration: 2031-08-04
Also published as: EP2739436A1; ES2601247T3; US20140157960A1; CN103842133B; EP2739436B1; US9321152B2; WO2013017174A1

Abstract

The invention relates to pliers (1) having two arms (2, 3) which are connected pivotably with respect to one another at a joint through which a joint pin (4) passes, wherein on an arm of the pliers (2, 3) a working area (7, 8) is formed on one side of the joint and a handle region (9, 10) is formed on the other side of the joint. A receiving arm (3) of the pliers is formed with an insertion slot (11) which has a slot width (s) in the region of the joint and through which the other inserted arm (2) of the pliers is inserted, wherein furthermore the working regions (4) of the arms of the pliers (2, 3) have a greater width (b) at least in part than the slot width (s), and the working regions (7, 8) which are in the form of jaws or cutters pivot towards a common central plane (E). In order to further develop the pliers with regard to a high performance which can be produced in the most favourable way possible, according to the invention the joint pin (4) is laterally offset with respect to the central plane (E).

Description

Pliers

The present invention relates to a kind of pliers with two tong arms, described tong arm connects rotatably in the joint that has articulating pin to intert, wherein, on tong arm, be designed with working region and be designed with grip area at opposite side in a side in described joint, and the tong arm being penetrated is provided with the groove that runs through in joint area with groove width, described in extending through, another tong arm passing runs through groove, wherein, the working region of described tong arm is also at least local has a width larger than groove width, and the described working region that is designed to jaw or scissors form can be to a central plane deflection that is positioned at pivot region center.

This pliers has been known.For example can bibliography DE 10 2,006 024 296 A1.Known gripper design becomes lateral shear pincers.For example, in the middle of can also being cutting nipper or combination plier.

Realize, in ensureing favourable as far as possible manufacturability, aspect high efficiency, further improving pliers.

So solve consequent technical problem according to the first inventive concept, make articulating pin misplace and settle with respect to central plane side direction.Therefore, the gash depth forming perpendicular to groove width is under any circumstance arranged in joint area with such size, makes articulating pin to offset out from central plane significantly.In principle also optionally, run through groove and extend so agley, namely actual widening in joint area, makes the actual not change of gash depth.But this structural design is not indispensable aspect the high stability of expecting.At this, significantly dislocation especially mean perpendicular to central plane, in half radius of articulating pin or the more offsetting in multiregion.Double diameter that for example can articulating pin about the upper limit offsetting is set to offsetting amount.Be misaligned from the center by articulating pin, thereby obtain the more favourable structural design that runs through groove.Especially in the region of articulating pin, do not need to process especially the end regions of the jaw side that runs through groove.In addition,, make to be beneficial to and to enter and process processing from this side because offset with respect to running through the elongation of groove in a side for the housing region of articulating pin.Especially can be in the region of articulating pin, be parallel to central plane and cut as much as possible and run through groove.The milling cutter that for this reason for example used also can processing continuously in this region.

Further feature of the present invention below, also in brief description of the drawings and accompanying drawing, conventionally be described or illustrate with itself and the preferred attachment relationship of the claim scheme of setting forth, but these features also can have invention meaning one or more indivedual features match in the situation that with described herein or illustrated only, especially in the association of already described claim 1, or also there is independently invention meaning independently or according to other combination.

It is therefore preferable that the geometrical axis of articulating pin with reference to the vertical line of central plane, along this vertical line direction, namely articulating pin along in the projection being lateral to perpendicular to the tong arm being penetrated on the region that articulating pin forms, be stacked with the region of the unslotted of the tong arm that penetrated.In the region of articulating pin, the tong arm being penetrated does not cover articulating pin completely and is cut in the direction perpendicular to articulating pin.This is conducive to stability.Run through groove in the region of articulating pin at least in part with the adjacent position in the unslotted region of tong arm on form.

Further preferably, the groove that runs through of the tong arm being penetrated has edge line in jaw side, and Qi Cong center viewed in plan declines and extends towards the free end of tong arm.The end regions that runs through groove being made up of the wall of the jaw side of the not cutting zone of tong arm is with reference to the amount extending longitudinally (if not considering the extension of the common bending of associated tong arm) of described central plane or the tong arm that penetrated and non-perpendicular to central plane or amount extending longitudinally but extend obliquely.Running through groove also can be partly, towards central plane, form in the working region of tong arm side as far as possible, instead of form in the region away from central plane.

Further preferably, the arris that runs through the jaw side of groove extends agley in described longitudinal section.Especially preferred, from center viewed in plan, this spill ground, edge extends.

In addition preferably, the free-ended arris that runs through the tong arm being penetrated belonging to of groove rises and extends towards central plane in described longitudinal section, in the time that pliers is closed.Belonging to the extension of the arris in the free end region of tong arm also can (at least about extension) in principle forms in the same manner symmetrically with respect to the extension of arris of end of the working region side that runs through groove.

Run through belonging to of groove free-ended arris and preferably extend agley, in addition from preferably spill of center viewed in plan.

Another kind of preferred structural design regulation, the border of the working region side that runs through groove of the tong arm being penetrated be configured for during in deployed position at pliers through the backstop of tong arm.By the structure of end regions, can regulate easily the performance of opening of pliers.In addition this backstop is not allowed direct clamping yet.In fact there will not be at this danger of blocking.

In addition preferably, in the closure state of pliers, with respect to the vertical line of central plane, the gash depth on the geometrical axis of articulating pin is less than gash depth that be attached thereto, in the free-ended offsetting region of tong arm.At this, determine that with setting means the gash depth of size is greater than the twice of the diameter of articulating pin, is preferably greater than three times on the geometrical axis of articulating pin.The upper limit can be for example five times of diameter of articulating pin.Widening in region of offsetting towards the free end of tong arm, described size is also widened to the region of twice at 1/4th of the radius of articulating pin.Run through groove widen region, start along the direction of central plane, from the vertical line of the geometrical axis that passes through articulating pin of central plane the amount extending longitudinally measured this preferably equal articulating pin radius 1/3rd to twice, the width that runs through groove in described region forms further to be widened.

Preferably at least in central region, being designed to regular cylindrical articulating pin for example can have the diameter within the scope of 3 to 9mm.

The grip area of tong arm also can be contained in respectively in handle sleeve.Especially can consider the handle sleeve made from plastic injection-moulded technique.Handle sleeve is so design especially preferably, makes it have identical thickness for the palmistry grasping to two tong arms.The grip area of the tong arm for the less grip area of size, especially passing, handle sleeve be also preferably designed for material strengthen.First this material is strengthened can be larger material thickness.In addition as alternative or supplementary, also can be by settling reinforcement to carry out material reinforcement in handle sleeve.In addition also can be with reference to aforementioned documents DE 10 2,006 024 296 A1 about handle sleeve, its disclosure can all comprise in the present invention at this, and the technical characterictic of described application also can be transferred in the application's claim for this reason.

For the grip area of the tong arm passing in this association preferably, grip area has a width and has if desired a thickness, this width matches with groove width.But also regulation, provides approximately larger width.At least, in described size, the insertion of the tong arm passing in the tong arm being penetrated can also not need the heat treatment process expending, but only implements by cold deformation (it also comprises plasticity cold deformation).

See utterly, relate to the width of tong arm at this, its approximately than groove width large 2 to 3mm.

Above with shown below go out scope and codomain aspect disclosure, also comprising all medians, especially with 1/10th spacing of each size, for example 0.1mm, be used for defining on the one hand the lower and/or coboundary of described scope, but the disclosure of the alternative or additional one or more independent numerical value that also relate to each scope.This also relates to the area boundary that there is no intended size, and wherein these numerical value are included in open scope as restriction and/or independent numerical value.

In addition further set forth by reference to the accompanying drawings the present invention.In the accompanying drawings:

Fig. 1 illustrates the top view of pliers;

Fig. 2 illustrates the side view of pliers;

Fig. 3 illustrates that III-III along the line dissects according to the cross section of the pliers of Fig. 1;

Fig. 4 illustrates that IV-IV along the line dissects according to the cross section of the pliers of Fig. 1 or Fig. 2;

Fig. 5 illustrates the view in an open position according to the pliers of Fig. 1;

Fig. 6 illustrates according to the decomposition view of the pliers of Fig. 1 or Fig. 2.

According to shown in and described in, pliers 1 has two

tong arms

2,3, they in the joint with articulating pin 4 that run through, axial restraint mutually be rotationally connected.

Tong arm

2,3

forms jaw

5,6 in a side of articulating pin 4, and

jaw

5,6 has the working region 7,8 of scissors form in this embodiment.Opposite side at articulating pin 4

forms grip area

9,10.

In this embodiment, articulating pin 4 has thinner shallow head and is provided with (less) countersunk head at opposite side in a side.In this embodiment, articulating pin 4 has the diameter of 5mm in its cylindrical region.For example diameter can be between 3mm to 6mm in principle.

One of tong arm, in this embodiment for tong arm 3 is provided with and runs through groove 11, another tong arm 2 can run through groove through this.Jaw 5,6 at least part has the width b (with reference to Fig. 2) larger than groove width s.

In addition, the grip area 10 of the tong arm 2 running through has width B (along the size of the direction of the geometrical axis of articulating pin 4), with reference to Fig. 6, this width B is in this embodiment at maximum and groove width s accurately adaptive (on the other hand as previously mentioned, also can realize larger width B at this).

Run through groove 11 in the formation between the

trench wall

20,21 extending that is parallel to each other.

Jaw 5,6 or working region 7,8, concrete be in this embodiment that rotate towards common central plane E the shearing tip of working region.Described shearing tip preferably in the time that pliers is closed (Fig. 1,4) in this central plane E, mutually recline.

Be labeled as straight line at the central plane E according in the top view of Fig. 1, the relative central plane E side direction dislocation of articulating pin 4 ground is arranged.The offsetting amount v of the central axis g of articulating pin 4 equals to be designed to the radius of cylindrical articulating pin 4 in this embodiment relatively.

Especially as shown in Figure 3 and Figure 4, the geometrical axis g of articulating pin 4 is hiding the territory, jaw lateral areas 12 of the unslotted of the tong arm 3 being through on the vertical line S towards central plane E.With respect to vertical line S, region 12 (shown in Fig. 4) wedge shape or triangular ground below vertical line S extend to the

free end

13 or 14 of tong arm.Leg-of-mutton outer rim is obviously extended agley at this.This is also according to shown in the sectional view of Fig. 3.

Run through the relative central plane E of arris 15 and this central plane of end regions of groove 11 almost on point 16 or crossing in the region with less wall thickness of end of joint side that belongs to shearing.Point 16 is positioned at the top of articulating pin 4.From central plane E observe, arris according to the diagram of Fig. 4 from putting the 16 initial

free ends

13 or 14 that drop to tong arm.In addition, observe arris 15 from central plane E and be designed to bow.

In addition in this embodiment, arris 15 is positioned on common circumference 17 with the end of the free end 13 towards tong arm 3 of the arris 18 that runs through groove 11.

The radius of circumference 17 equals to run through many times of width s of groove 11.In this embodiment, this radius is 13 times of width s.Preferably, this radius equals to run through 5 to 20 times of vacancy size s of groove.

Observe from articulating pin 4, arris 18 is also bow ground extension correspondingly.

Especially as shown in Figure 5, arris 15, be formed for implementing the tong arm 2 that the runs through backstop at open position at the tip 19 of this its outer rim one side.

The gash depth t measuring on vertical line S ₁be less than gash depth t that be attached thereto, in the dislocation region of the free end of the tong arm 13 being run through ₂.T ₂roughly than t ₁go out greatly 15%.

Observe from jaw 5 as shown in Figure 6, the shadow region of two

trench walls

20,21 of the tong arm 3 being run through is freely stretched out jaw 6 in the same manner highlightedly.Jaw material (also reference point 16) connected on the root of

trench wall

20,21 cut parts at jaw 5 roughly stops in the region of central plane.Relatively give prominence to balcony shape the shadow region of trench wall 20,21.Described outstanding relate to a little 16 and the summit P of the bending gabarit in its grip area of the tong arm 3 that run through between connecting line V.Hole for articulating pin 4 that form in

trench wall

20,21, mutually alignment at least in part, preferably be greater than the area of its hole area half, further preferably with until whole hole areas in described outburst area, extend.

All disclosed features (own) have invention meaning or invention to be worth.In the application's open file, the disclosure of affiliated/attached priority text (earlier application file) is also included completely, also the feature in this priority text is included in claims of the application for this reason.Those selectable designs arranged side by side in dependent claims are all the improvement designs that has independent invention meaning or value for prior art, can these dependent claims be especially that basis proposes divisional application.

List of numerals

1 pliers

2 tong arms

3 tong arms

4 articulating pins

5 jaws

6 jaws

7 working regions

8 working regions

9 grip area

10 grip area

11 run through groove

12 regions

13 free ends

14 free ends

15 arris

16 points

17 circumferences

18 arris

19 tips

20 trench walls

21 trench walls

B width

G central axis

S groove width

V offsetting amount

T ₁gash depth

T ₂gash depth

B width

E central plane

P summit

V connecting line

S vertical line

Claims

1. one kind has two tong arms (2, 3) pliers (1), described tong arm (2, 3) in the joint that has articulating pin (4) to intert, connect rotatably, wherein, at tong arm (2, 3) be above designed with working region (7 in a side in described joint, 8) and at the opposite side in described joint be designed with grip area (9, 10), and the tong arm being penetrated (3) be provided with in joint area, there is groove width (s) run through groove (11), described in extending through, another tong arm passing (2) runs through groove (11), wherein, described tong arm (2, 3) working region (7, 8) also at least part has the width (b) larger than groove width (s), and be designed to the described working region (7 of jaw or scissors form, 8) can be to a common central plane (E) deflection, it is characterized in that, described articulating pin (4) is settled with respect to central plane (E) side direction dislocation ground.

2. the pliers described in the claim according to claim 1 or especially, it is characterized in that, the geometrical axis (g) of described articulating pin (4) is with reference to being stacked perpendicular to the region (12) of the vertical line (S) of central plane (E) and the unslotted of the described tong arm being penetrated (3).

According to one or more in aforementioned claim or especially after claim described in pliers, it is characterized in that, the described tong arm being penetrated (3) has the arris (15) in working region side, and this arris (15) starts to extend and decline towards the free end (11) of described tong arm (3) from the intersection point (16) of itself and central plane (E).

According to one or more in aforementioned claim or especially after claim described in pliers, it is characterized in that, described arris (15) extends agley.

According to one or more in aforementioned claim or especially after claim described in pliers, it is characterized in that, described arris (15) from central plane (E) observe be spill extend.

According to one or more in aforementioned claim or especially after claim described in pliers, it is characterized in that, described in run through belonging to of groove (11) of the described tong arm being penetrated (3) the arris (18) in free end region (13) in longitudinal section, in the time that pliers (1) is closed, rise and extend with respect to center line.

According to one or more in aforementioned claim or especially after claim described in pliers, it is characterized in that, described in run through groove (11) the arris (18) that belongs to described free end region (13) to observe from described articulating pin (4) be that spill is extended.

According to one or more in aforementioned claim or especially after claim described in pliers, it is characterized in that the backstop of the tong arm (2) passing described in the channel boundary of the working region side of the described tong arm being penetrated (3) is configured for during in deployed position at described pliers (1).

According to one or more in aforementioned claim or especially after claim described in pliers, it is characterized in that, the grip area (10) of the described tong arm passing (2) has a width (B) and also has if desired a thickness, this width (B) matches with groove width (s), and for example this width (B) maximum equals groove width (s) or has small interference.